Aeris is an Aquarius, but I'm going to give it as so many people were not getting anywhere.
'Twelve of me there are (there are twelve zodiac signs)
Seven of me you possess (seven of the characters have zodiac signs. Cait Sith and Red are the exceptions)
Six will make it far (six of the characters with zodiac signs make it to the end fo the game)
The other lays in the depths' (Aeris doesn't make it to the end)
Weimar, your turn.
